EoW May 2011

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EuroWire – May 2011 32
technology news
Reliable quality control
The Sikora Centerview 8000 is the
successor of the successful Centerview
2000 and is equipped with unique
functions such as the 8-point-
eccentricity and ovality measurement,
a patent-pending cloud diagram and
numerous improvements of precision and
performance.
Centerview 8000 is a non-contact gauge
head providing continuous online
measurement. The 8-point eccentricity,
4-axis diameter and 8-point ovality
measurements ensure highest accuracy.
The system is perfectly suitable for the
production of coaxial cables, LAN cables
as well as automotive and installation
cables. Sikora offers two versions, each
specifically designed for the product:
Centerview 8010 for product diameters
from 0.1 to 10mm and Centerview 8025
for product diameters from 0.5 to 25mm.
Centerview 8000 combines an optical and
inductive measuring technique. With the
inductive measuring circle the position
of the conductor is determined and the
gauge head automatically centered to
the cable position. Guide rollers and
manual configuration are unnecessary.
This unique characteristic makes for easier
set-up, handling and operation of the
unit. The reliability and undemanding
usage are appreciated by every operator.
The optical part of the system is based on
the principle of the diffraction analysis
combined with pulse-driven laser diodes,
whose light beam projects a picture of the
cable on CCD-line sensors in each of the
four measuring axis. Within microseconds
eccentricity, diameter and ovality are
calculated from the image of the product.
In order to achieve precise single values
in the sub micrometre range the design
of the gauge head does not include
rotating mirrors or optical lenses. The
lack of moving parts in the system
ensures freedom from maintenance and
guarantees reliability at all line speeds.
Calibration is done only once and
is unnecessary thereafter. Accurate
measuring values, high quality and
production optimisation combined
with substantial cost reductions are the
principal benefits.
The cloud diagram is an additional way
of presenting the measured values of the
ongoing measurement at the Ecocontrol.
The cloud diagram provides information
on the distribution of short term variation
of eccentricity in graphical form. Each dot
corresponds to a single measured value of
eccentricity in relation to the amount and
angle.
The extension of the cloud diagram is
an indicator of the standard deviation of
eccentricity.
A circle type distribution of the single
values of the eccentricity indicates their
fluctuation range. This display is helpful
to optimise the process in terms of
minimising standard deviation.
A ring type cloud diagram indicates
that there is a permanently rotating
eccentricity value.
Sikora AG – Germany
Fax : +49 421 4890 090
Email:
Website:
▲ ▲ S t a n d a r d
representation of
eccentricity at the
Ecocontrol 2000